Operation Manual

POW751 EN
Copyright © 2016 VARO P a g e | 7 www.varo.com
6.2 Thinning
Always remember to disconnect from the mains supply before filling the
paint container with sprayable material.
Most paints are supplied ready for brush application and will need to be thinned before they
are suitable to be sprayed. Follow the manufacturer’s advice on thinning. The paint when
used with a spray gun. The viscosity cup will help you to determine the correct viscosity of
paint to be used. To determine the correct viscosity, fill the cup to the brim with the paint.
Measure the amount of time it takes for the cup to empty back into the can.
The table below shows recommended times for different types of material.
Plastic & latex paint
24 - 28 seconds
Water based paint
20 - 25 seconds
Primers
24- 29 seconds
Varnishes
25 - 35 seconds
Oil based paints
18 - 22 seconds
Enamel paints
18 - 22 seconds
Aluminum paints
22 - 25 Seconds
Car under sealing
25 - 35 seconds
Wood sealers
28 - 35 seconds
Wood preservatives
No thinning required
Wood stains
No thinning required
If the paint takes longer than the recommended time to empty, then further thinning is required.
Mix in a small quantity of the appropriate thinner and use the viscosity test until the correct
thickness is achieved. Some sprayable materials contain particles and lumps. These materials
should be strained before filling the paint container.
6.3 Nozzle selection
1 mm: general purpose nozzle, suitable for high-viscosity materials such as emulsions, latex
and thicker type paints.
0.8 mm: suitable for oil-based materials, stains, sealers, lacquers, water-proofers and enamels
for small application areas.
0.6 mm: suitable for very low viscosity materials such as wood preservatives, pesticides,
oils,etc.
6.3.1 Adjusting the output amount
Please refill the container when it is almost empty.
If spray output before refilling is not a as you wish (spluttering / mist not good …) please re-
adjust by turning the output control knob to the appropriate position.
6.4 Spraying (fig c)
Fill the paint container with the correctly thinned and strained paint. Connect the spray gun to
the mains supply. Aim the spray gun at a piece of scrap material and operate the trigger
switch until paint is spraying. Adjust the output control (2) until the required volume of paint is
spraying, Turn the output control in a clockwise direction (B) to reduce the flow and anti-
clockwise (A) to affect the spray pattern. A poor spray pattern will concentrate the paint in the
centre of the spray and give a blotchy finish. A good spray pattern will give even distribution of
paint throughout the pattern.